forked from fabric8io/kubernetes-client
-
Notifications
You must be signed in to change notification settings - Fork 0
/
DefaultSharedIndexInformerResyncTest.java
190 lines (166 loc) · 7.03 KB
/
DefaultSharedIndexInformerResyncTest.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
/**
* Copyright (C) 2015 Red Hat, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.fabric8.kubernetes.client.informers.impl;
import io.fabric8.kubernetes.api.model.Pod;
import io.fabric8.kubernetes.api.model.PodList;
import io.fabric8.kubernetes.api.model.PodListBuilder;
import io.fabric8.kubernetes.client.Watch;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;
import org.mockito.Mockito;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import static org.assertj.core.api.AssertionsForClassTypes.assertThat;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertNull;
import static org.junit.jupiter.api.Assertions.assertThrows;
class DefaultSharedIndexInformerResyncTest {
private abstract static class AbstractPodListerWatcher implements ListerWatcher<Pod, PodList> {
};
private static final Long WAIT_TIME = 500L;
private final ListerWatcher<Pod, PodList> listerWatcher = Mockito.mock(AbstractPodListerWatcher.class,
Mockito.RETURNS_DEEP_STUBS);
DefaultSharedIndexInformer<Pod, PodList> defaultSharedIndexInformer;
private DefaultSharedIndexInformer<Pod, PodList> createDefaultSharedIndexInformer(long resyncPeriod) {
defaultSharedIndexInformer = new DefaultSharedIndexInformer<>(Pod.class, listerWatcher, resyncPeriod, Runnable::run);
return defaultSharedIndexInformer;
}
@BeforeEach
void beforeEach() {
Mockito.when(listerWatcher.submitWatch(Mockito.any(), Mockito.any()))
.thenReturn(CompletableFuture.completedFuture(Mockito.mock(Watch.class)));
PodList result = new PodListBuilder().withNewMetadata().endMetadata().build();
Mockito.when(listerWatcher.submitList(Mockito.any()))
.thenReturn(CompletableFuture.completedFuture(result));
}
@AfterEach
void afterEach() {
if (defaultSharedIndexInformer != null) {
defaultSharedIndexInformer.stop();
}
}
@Test
@DisplayName("Controller initialized with resync period greater than zero should use provided resync period")
void testControllerCreationWithResyncPeriodMoreThanZero() {
// Given + When
DefaultSharedIndexInformer<Pod, PodList> controller = createDefaultSharedIndexInformer(1000L);
// Then
assertEquals(1000L, controller.getFullResyncPeriod());
}
@Test
@DisplayName("Controller initialized with resync period less than zero should throw exception")
void testControllerCreationWithResyncPeriodLessThanZero() {
assertThrows(IllegalArgumentException.class, () -> createDefaultSharedIndexInformer(-1));
}
@Test
@DisplayName("Controller initialized with resync period 0 should use provided resync period")
void testControllerCreationWithResyncPeriodZero() {
// Given + When
DefaultSharedIndexInformer<Pod, PodList> controller = createDefaultSharedIndexInformer(0);
// Then
assertEquals(0L, controller.getFullResyncPeriod());
}
@Test
@DisplayName("Controller stop shut downs/cancels all executor services")
void testStop() {
// Given
DefaultSharedIndexInformer<Pod, PodList> controller = createDefaultSharedIndexInformer(0);
controller.run();
// When
controller.stop();
// Then
assertThat(controller.isRunning()).isFalse();
}
@Test
@DisplayName("Controller initialized with resync period should initialize resyncExecutor")
void testControllerRunWithResyncPeriodGreaterThanZero() throws InterruptedException {
// Given + When
DefaultSharedIndexInformer<Pod, PodList> controller = createDefaultSharedIndexInformer(1);
controller.run();
assertNotNull(controller.getResyncFuture());
controller.stop();
assertNull(controller.getResyncFuture());
}
@Test
@DisplayName("Controller with resync function throwing exception")
void testControllerRunsResyncFunctionThrowingException() throws InterruptedException {
// Given + When
long fullResyncPeriod = 10L;
int numberOfResyncs = 10;
final CountDownLatch countDown = new CountDownLatch(numberOfResyncs);
DefaultSharedIndexInformer<Pod, PodList> controller = createDefaultSharedIndexInformer(fullResyncPeriod);
controller.scheduleResync(() -> {
countDown.countDown();
if (countDown.getCount() == 2) {
throw new RuntimeException("make it fail");
}
return true;
});
countDown.await(WAIT_TIME, TimeUnit.MILLISECONDS);
controller.stop();
// Then
assertThat(countDown.getCount()).isLessThanOrEqualTo(2);
}
@Test
@DisplayName("Controller initialized with resync period to 0 should not initialize resyncExecutor")
void testControllerRunWithResyncPeriodToZero() throws InterruptedException {
// Given + When
DefaultSharedIndexInformer<Pod, PodList> controller = createDefaultSharedIndexInformer(0);
controller.run();
// Then
assertNull(controller.getResyncFuture());
}
@Test
@DisplayName("Controller initialized with resync period should run, initialize resyncExecutor and resync at least a given number of times")
void testControllerRunsReyncFunctionExpectedNumberOfTime() throws InterruptedException {
// Given + When
long fullResyncPeriod = 10L;
int numberOfResyncs = 10;
final CountDownLatch countDown = new CountDownLatch(numberOfResyncs);
DefaultSharedIndexInformer<Pod, PodList> controller = createDefaultSharedIndexInformer(fullResyncPeriod);
controller.scheduleResync(() -> {
countDown.countDown();
return true;
});
// We give an extra cycle to avoid clock inaccurracy interruptions
countDown.await(WAIT_TIME, TimeUnit.MILLISECONDS);
controller.stop();
// Then
assertNull(controller.getResyncFuture());
assertThat(countDown.getCount()).isLessThanOrEqualTo(1);
}
@Test
@DisplayName("Controller initialized with resync period to 0 should run but never resync")
void testControllerNeverRunsReyncFunctionWhenPeriodIsZero() throws InterruptedException {
// Given + When
int count = 10;
final CountDownLatch countDown = new CountDownLatch(count);
DefaultSharedIndexInformer<Pod, PodList> controller = createDefaultSharedIndexInformer(0);
controller.scheduleResync(() -> {
countDown.countDown();
return true;
});
countDown.await(1000, TimeUnit.MILLISECONDS);
controller.stop();
// Then
assertNull(controller.getResyncFuture());
assertThat(countDown.getCount()).isEqualTo(count);
}
}